i know there are some triggers out there but i use the factory
one and it works for me. mag there to i have never that one
jam i only use winchester ammo i have 2 high round count mags
and one of them jams but i think that was weight of the ammo.
hope you can find the trouble.

tc,s 223 35rem 7-30 waters 6.5jdj 375
30/30ai 6mm/223 22lr
encores 7mm-08 308
redhawk 44mag.